Question: What are the tributaries of the river which the Incheon Bridge spans?
Paraphrase: What tributaries does Incheon Bridge go over?
SPARQL (Wikidata): SELECT ?answer WHERE { wd:Q483949 wdt:P177 ?X . ?X wdt:P974 ?answer}
Answer: Yellow River, Han River, Geum River, Yeongsan River, Ch'ongch'on River, Liao River, Daliao River, Shu River, Yihe, Yalu River